PETG

What is PETG and why choose it?

PETG (Polyethylene Terephthalate Glycol) is an increasingly popular 3D printing filament, renowned for its excellent balance between performance and ease of use. It is often considered the "best of both worlds", combining the robustness of ABS with the printing simplicity of PLA.

 
1. High Resistance: Offers excellent mechanical and impact resistance, far superior to that of PLA.

 

2. Durability: Less brittle than PLA, with better inter-layer adhesion.

 

3. Ease of printing: Much less prone to warping than ABS, it doesn't require a closed enclosure.

 

4. Chemical resistance: Good resistance to acids, alkalis and water.

Essential technical characteristics

 
• Available diameters: 1.75mm & (2.85mm on request - 10kg min)

 

• Extrusion temperature: 220-250°C

 

• Platter temperature: 70-90°C (strongly recommended)

Choosing the right PETG filament

Frequently Asked Questions

 
1. Is PETG suitable for functional parts? Absolutely. That's its main advantage. It's perfect for housings, brackets, mechanical parts and anything else that has to withstand stress.

 

2. What packaging do you offer? Our PETG filament range is available in Sample, 500g, 750g, 1kg, 5kg, and 10kg. For specific requirements, please contact us.

 

3. Is PETG suitable for food contact? Natural (uncolored) PETG is often considered suitable for food contact. However, it's important to note that the FDM 3D printing process creates layers that can harbor bacteria. Use for food contact should be made with caution.

 

4. How should PETG be stored? Like PLA, PETG is hygroscopic (it absorbs moisture). Dry storage in an airtight bag with desiccant is crucial to avoid stringing problems and guarantee a beautiful print.

Common applications of PETG

 
• Functional prototypes

 

• Mechanical parts and tools

 

• Electronics enclosures

 

• Shock-resistant items

 

• Translucent parts (lampshades, etc.)

Printing tips for optimal results

PETG is easy to print, but has its own specific characteristics, notably a tendency to "stringing" (deposition of fine plastic hairs).

 
1. Tray adhesion: A heated tray (70-90°C) is required. Caution: PETG adheres very strongly! The use of a lacquer or glue stick can paradoxically serve as an interface to facilitate part release.

 

2. Stringing: Make sure your filament is dry. PETG is very sensitive to moisture. Optimized shrink settings (speed and distance) are essential for clean prints.

 

3. Cooling: PETG prefers moderate cooling. Set your room fan between 20% and 50% (never 100% like PLA) to ensure maximum inter-layer adhesion.

 

4. Printing speed: It's often best to print PETG slightly slower than PLA (e.g. 40-60 mm/s) for better quality and fewer threads.

Quick comparison: PETG vs other common filaments

Francofil's commitment to quality and French manufacturing

At Francofil, we're not just resellers: we're manufacturers. Every spool of PETG filament you buy is produced in our workshop in Normandy, guaranteeing complete traceability and rigorous quality control. We control the entire process, from the selection of premium PETG granules to extrusion and winding. Choosing Francofil means supporting local production and ensuring reliable filament for your functional parts.